#pragma once

#include <iostream>
#include <string>
#include <unistd.h>
#include <fcntl.h>

#define Die(code)   \
    do              \
    {               \
        exit(code); \
    } while (0)

#define CONV(v) (struct sockaddr *)(v)

enum
{
    USAGE_ERR = 1,
    SOCKET_ERR,
    BIND_ERR,
    LISTEN_ERR,
    EPOLL_CREATE_ERR,
    EPOLL_CTL_ERR
};

const int gdefaultsockfd = -1;
const int gbacklog = 8;

// 1. 正常字符串 2. out空串&&返回值是true  3. out空串&&返回值是flase
bool ParseOneLine(std::string &str, std::string *out, const std::string &sep)
{
    auto pos = str.find(sep);
    if (pos == std::string::npos)
        return false;
    *out = str.substr(0, pos);
    str.erase(0, pos + sep.size());
    return true;
}

// Connection: keep-alive
bool SplitString(const std::string &header, const std::string &sep, std::string *key, std::string *value)
{
    auto pos = header.find(sep);
    if (pos == std::string::npos)
        return false;
    *key = header.substr(0, pos);
    *value = header.substr(pos+sep.size());
    return true;
}


void SetNonBlock(int sockfd)
{
    int fl = fcntl(sockfd, F_GETFL); // F_GETFL 获得文件描述符标志位
    if(fl < 0)
    {
        perror("fcntl");
        return ;
    }
    fcntl(sockfd, F_SETFL, fl | O_NONBLOCK);
}